The iStick QC 200W is the evolution of the iPower system, extending the power range by 150% percent for a maximum for 200W. Alongside the extensive power ceiling is preheat functionality, full temperature control, and a smart mode output that saves up to 10 distinct atomizer resistance profiles that provide convenience when switching amongst different atomizers. Inside the chassis is a 5000 mAh power bank comprised of three batteries run in series, with the namesake QC (Quick Charge) technology allowing for a maximum effective charge rate of 1.5A. The iStick QC 200W also deploys Eleaf's switchable interface software, giving users added flexibility to switch between the interface best suited to your needs. Eleaf'sMelo 300 Sub-Ohm Tank is the first extreme performance orientated atomizer from Eleaf, capable of an absolutely staggering 300W maximum output. The marquee feature of the Melo 300 is the new Eleaf ES Sextuple Coil Structure, an extreme performance orientated wide body chassis design that is rated between 100 and 300W, allowing for exceptional maximum range. Each ES Sextuple Coil features a three coil section design with parallel vertical coils in each section, with an ohm rating of 0.17 ohms.Airflow feeds into this high performance atomizer through dual 13mm by 3mm airslots located at the base of the chassis providing ample airflow all the way up to the ES Sextuple Coil's 300W maximum. Bringing high performance, a sizeable integrated battery, and Eleaf's flagship Sub-Ohm Tank, the iStick QC200W and Melo 300 Sub-Ohm Tank Starter Kit is one of the mostwell balanced kits offered this season.